ArmPkg/Library/CompilerIntrinsicsLib/Arm/moddi3.S

   1 #------------------------------------------------------------------------------
   2 #
   3 # Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   4 #
   5 # This program and the accompanying materials
   6 # are licensed and made available under the terms and conditions of the BSD License
   7 # which accompanies this distribution.  The full text of the license may be found at
   8 # http://opensource.org/licenses/bsd-license.php
   9 #
  10 # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12 #
  13 #------------------------------------------------------------------------------
  14
  15         .text
  16         .align 2
  17         .globl ASM_PFX(__moddi3)
  18   INTERWORK_FUNC(__moddi3)
  19
  20 ASM_PFX(__moddi3):
  21         stmfd   sp!, {r4, r5, r7, lr}
  22         mov     r4, r1, asr #31
  23         add     r7, sp, #8
  24         stmfd   sp!, {r10, r11}
  25         mov     r10, r3, asr #31
  26         sub     sp, sp, #16
  27         mov     r5, r4
  28         mov     r11, r10
  29         eor     r0, r0, r4
  30         eor     r1, r1, r4
  31         eor     r2, r2, r10
  32         eor     r3, r3, r10
  33         add     ip, sp, #8
  34         subs    r0, r0, r4
  35         sbc     r1, r1, r5
  36         subs    r2, r2, r10
  37         sbc     r3, r3, r11
  38         str     ip, [sp, #0]
  39         bl      ASM_PFX(__udivmoddi4)
  40         ldrd    r0, [sp, #8]
  41         eor     r0, r0, r4
  42         eor     r1, r1, r4
  43         subs    r0, r0, r4
  44         sbc     r1, r1, r5
  45         sub     sp, r7, #16
  46         ldmfd   sp!, {r10, r11}
  47         ldmfd   sp!, {r4, r5, r7, pc}